Most ICOs and especially bounty campaigns seem to use plagiarized content in some capacity. I rarely read ICOs so can't comment on that but half of them just rehash the same templates or just copy what somebody has already previously posted on their ANN/Bounty thread. Wouldn't surprise me at all if it was the same group of people behind half of them as well. Probably too good to be true for scammers to resist so they just keep them running constantly. People keep seeming to give them their money for half-baked ideas so I can't see why they would stop creating them.
This is basically because they know that people don't normally read the whitepapers of these ICOs and i wouldn't really trust any ICO if they are able to plagiarize the work of another ICO.
This is a very bad reputation for those people out there part-taking in such practices. Though, my view on this is that if the team is not serious enough about their idea that's when they may try to fall into this, otherwise if the team has a brilliant idea they would WANT to explain in the whitepaper why is that so, and so the good ICOs won't want the shortcut others might take.